Marinus weber



Nu. 6l7,824.

Patented Ian. l7, I899. M. WEBER.

DRY ORE STRIP. (Application and Supt. 1a, 1897.)

2 Shan -Shoot I.

(No Model.)

WMM

' UNITED I STATES PATENT OFFICE.

' MARINUS WEBER, OF ADELAIDE,'SOUTH AUSTRALIA.

- DRY ORE-STAM P.

SPECIFICATION forming part of Letters Patent N0. 617,824, dated January 17, 1899.

I Application filed September 16, 1897. Serial No'. 651,845. (No model.) I

To all whom it may concern/.-

Be it known that I, MARINUS WEBER, a citizen of the Republic, of Switzerland, residing at Adelaide, in the Province of South Australia, have invented certain new and useful Improvements in Stamp Batteries for Pulverizing One in a Dry State, of which the following is a specification.

My invention relates to an improved dry ore-stamp. Hitherto it has in most cases been customary to feed the ore into. a vstamp-box or mortar, where itis crushed beneath falling stamps and the fine particles are washed out of the said mortar by means of water,which is so applied as to cause acontinuous stream of mush to flow from the box.

In my invention the box or mortaris so arranged that as the stamp descends upon the ore certain loose bars at the bottom of the box slightly oscillate and by this means eject the finely-crushed particles of the ore, suitable openings being provided for its exit. Moreover, a sliding door is arranged within the hopper of mymortar or box, whereby the supply of ore to the box can be automatically regulated.

In my appliance the stamp is counterbal anced by means of a spring, which vibrates, so as to allow the said stamp to rise and fall, a driving-spring and eccentric gear being provided for the purpose of imparting motion to the stamp-rod. In addition to the parts above referred to I arrange a shaking-sieve below.

the mortar, so that the crushed particles may be evenly graded, and I also .provide an-oscillating, table for the purpose of catching the particles which have passed through the sieve;

I will now proceed to describe my invention in detail, having reference to the accompanyingillustrative drawings, in which Figure 1 is a front elevation of my stamperbattery, the box being shown in part section.

Fig. 2 is a side elevation of the appliance,

the box being shown-in partsection, as above. Fig. 3 is a part plan. Fig. 4 is an illustration of a bar in plan and elevatiom Fig. 5 is a detail of the bottom of the mortar or box, showing one bar in place and one bar removed therefrom. Figs. 6, 7, 8, and 9 are details of the stamps and rods in plan and elevation, showing various methods for connecting the stamps to the rod.

In Fig. 6 the rod F is increasedin diameter shown in plan.

at'F and fits into the upper portion of thev I stamp F, as shown, the upper portion of the stamp being held to the lower portion by the bolts F which are provided with nuts.

In Fig. 7 a screw-thread is cut into the stamp, and a similarly-screwed ferrule is ati tached to the rod, as shown at F. The upper part of the ferrule is formed witha square or hexagonal-head, as shown at F, so that a spanner may beemployed in order to enable the same to be screwed into place, a pin or key being provided at F to prevent the nut from becoming unscrewed by the jarring of the stamp. In Fig. 8 a plug F" is arranged above the stamp; through which a key F is passed. A

' sponding recesses, and in such position they are'firmly held by the key F.

Throughout the drawings similar letters of reference are used to denote like parts.

A is the framework of the machine, whereon a suitable driving-shaft B is arranged. Upon the said spindle the eccentrics O are keyed or otherwise fastened.

D is a driving spring-lever having a forked end D, which gears with the eccentric C and is supported bythe fulcrum E. The end of the driving spring-leverD passes between two collars F, which are arranged upon the stamprod F, the said stamp-rod being guided by the brackets F and provided with a stampshoe v p S is a strong spring arranged in the manner indicated in the drawings and is 'so tempered as to be capable of supporting the stamp-rod F, the collars F being provided for the reception of its free end, which is forked, as

G is the stamp-box or mortar, having afietachable bottom. In the bottom of the box or mortar, in which narrow openings G, between the separate bed-timbers are formed, two or more bars, such as H, am loosely fitted. These bars are so constructed that when one end of the bar is placed in a horizontal position the other end is inclined upward, as will be wellunderstood from reference to Fig. 4 of the drawings. The bars which are in the bottom of the box rest upon the foundation-blocks J'J J so that as the stamps descend the bars II oscillate alternately to the right or left, taking temporary bearing on the blocks J and J alternately, thus allow ing the crushed ore to fall between the slots in the bottom of the box and the bars II after each blow of the stamp. The thickness of the bars may be varied to suit the nature of the ore it is intended to treatthat is tosay, with easily-crushed ore smaller bars can be used, so as to allow more space for the cru shed ore to pass out of the box.

M is afloor from which the ore can be thrown into the hopper M. Y

N is a screen or sieve for grading purposes, which is suitably supported and may be caused to shake by means of alight rod, wire,

or chain attachment N, such rod, wire, or

chain being connected with some movable part of the appliancesuch, for instance, as

with the bars II, which are in the bottom of the box or mortar, or to the lever-spring D, as illustrated in Fig. 2.

O is a tray or receptacle for the graded ore and may be pivotally'mounted on any convenient bearing 0'.

The action of my appliance scribed as follows:

' Rotary motion is imparted to the drivingshaf-t B by any convenient means. As the eccentric O revolves with the shaft B it impartsan oscillating motion to the spring-lever D, whereby an up-and-down motion is given to the stamp-rod, this movement being easily attained in consequence of the stamp being held in equilibrium by the spring S. Meanwhile ore is spread through the hopper M into the box G" and falls upon the bars H and bottom of the box. As the stamps demay be descend the ore is pulverized, and the oscillating bars Hallow the finely-divided particles to pass between the bars and to be ejected through the openings in the box. The ejected ore falls upon the sieve N, to which a shaking motion is imparted in the manner hereinbefore described. The fine particles of ore fall through the meshes of the sieve and are caught within the tray 0; but the larger particles roll down the incline of the sieve and may be collected and agaiif passed into-the mortar to undergo further treatment.

An important feature of my invention consists in a sliding door P for the purpose of regulating the admission of the ore into the box. opened and closed by the motion of the stam s. In order to achieve this result, the chain P is attached to'the sliding door, which is arranged within the hopper and works in suitable 7 grooves, aprotecting plate or cover P being provided, so as to relieve the pressure of the The said sliding door' is automatically f ore from against the sliding door. The chain is connected with a cross-bar Q, which works upon a suitable fulcrum Q and terminates with a T-head Q arranged in such a manner as to come into contact with a collar R upon the stamp-rods. as the stamp descends it comes into contact with the cross-lever, so that as the latter turns It will readily be seen that upon its fulcrum it causes the door to be Y raised by means of the chain 1?, so that the ore which is placed in the hopper is enabled to fall into the box; but as soon as the crossbar is disengaged by the ascending stamp the door automatically closes by its own weight.

It will .readily be understood that the amount of opening will be regulated according to the quantity of ore which is in the box.

A suitable rate of speed for my machine would be from one hundred and thirty to one hundred and fifty blows per stamp per min ute.

Having now particularly described and ascertained the nature of my said invention and in-what manner the same is to be performed,

vI declare that what I claim is- 1. A dry ore-stamp composed of the stamp proper with Stamper-box "G having slotsiG, foundation-blocks J, J, J 2 and rocking bars 11, a hopperM, an automatically supply-regulating slide-door P arranged within the hopper and provided with protecting cover-plate B ,-chain P, T-ended lever Q with head Q working upon fulcrum Q and alternately-actuating collars R carried by the stamp-stems, an inclined sieve below the stamper-box and means for actuating the stamps, as specified.

2. In a dry ore-stamp a slide-door P arranged within the hopper and protected by cover-plate P in combination with chain P a T-ended lever Q with head Q working upon fulcrum Q and alternately-actuating collars R carried by the stamp-stems, substantially as described.

3. In a dry ore-stamp, the combination of the stamp-stem and collar, an inclined screen or sieve N supported below the Stamper-box, the spring actuating-lever D, and a chain attachment N, and automatically actuating the screen, substantially as described.

4. In a dry ore-stamp, the combination of eccentrics 0 mounted upon the driving-shaft B, a stamp nod-actuating spring-lever D.

' stamp-rod near its top between collars F F and thestamp-rod and-stamp, substantially as specified. P l In testimony that I claim the foregoing as my invention I have signed my name, in the presence .of the subscribing witnesses, this 30th day of April, 1897. 4

iMARINUS WEBER.

Witnesses:

CHAS. A. MURPHY, JOHN HERBERT (looks. 

